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nlohmann
2026-09-27 21:37:45 +00:00
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features/binary_formats/index.md
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@@ -3,6 +3,7 @@
Though JSON is a ubiquitous data format, it is not a very compact format suitable for data exchange, for instance, over a network. Hence, the library supports
- [BJData](https://json.nlohmann.me/features/binary_formats/bjdata/index.md) (Binary JData),
- [BON8](https://json.nlohmann.me/features/binary_formats/bon8/index.md) (Binary Object Notation 8),
- [BSON](https://json.nlohmann.me/features/binary_formats/bson/index.md) (Binary JSON),
- [CBOR](https://json.nlohmann.me/features/binary_formats/cbor/index.md) (Concise Binary Object Representation),
- [MessagePack](https://json.nlohmann.me/features/binary_formats/messagepack/index.md), and
@@ -17,6 +18,7 @@ to efficiently encode JSON values to byte vectors and to decode such vectors.
| Format | Serialization | Deserialization |
| ----------- | --------------------------------------------- | -------------------------------------------- |
| BJData | complete | complete |
| BON8 | incomplete: no unsigned integers above int64 | complete |
| BSON | incomplete: top-level value must be an object | incomplete, but all JSON types are supported |
| CBOR | complete | incomplete, but all JSON types are supported |
| MessagePack | complete | complete |
@@ -27,6 +29,7 @@ to efficiently encode JSON values to byte vectors and to decode such vectors.
| Format | Binary values | Binary subtypes |
| ----------- | ------------- | --------------- |
| BJData | not supported | not supported |
| BON8 | not supported | not supported |
| BSON | supported | supported |
| CBOR | supported | supported |
| MessagePack | supported | supported |
@@ -41,6 +44,7 @@ See [binary values](https://json.nlohmann.me/features/binary_values/index.md) fo
| BJData | 53.2 % | 91.1 % | 78.1 % | 96.6 % |
| BJData (size) | 58.6 % | 92.1 % | 86.7 % | 97.4 % |
| BJData (size+type) | 58.6 % | 92.1 % | 86.5 % | 97.4 % |
| BON8 | 50.5 % | 83.8 % | 63.5 % | 87.5 % |
| BSON | 85.8 % | 95.2 % | 95.8 % | 106.7 % |
| CBOR | 50.5 % | 86.3 % | 68.4 % | 88.0 % |
| MessagePack | 50.5 % | 86.0 % | 68.5 % | 87.9 % |